After her gala vacation in London, Shruti Haasan is back to work. The actress landed in Chennai a couple of days back and she has joined the team of director Hari's S3. She shared a collage on Instagram where she was seen with the film's cast and crew. The third installment of the Singham franchise, S3 stars Suriya, Shruti Haasan and Anushka Shetty in lead roles. The film is produced by Studio Green.